Web-roll control



W. H. OGDEN WEB ROLL CONTROL 2" Sheets-Sheet 1 mvawwn A; A/ @M Filed March 1 1926 July 27, 1926., 1,594,338

, w. H. OGDEN WEB ROLL CONTROL IINVENTR.

(D W flaw ATTYS.

Patented July 27, 1926.

UNITED STATES 1,594,338 PATENT OFFICE;

WALTER H. OGDEN, OF CLEVELAND, OHIO, ASSIGITOR TO B. HOE & 00., ING, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

WEB-ROLL CONTROL.

Application filed. March 18, 1926. Serial No. 95,571.

This invention relates to certain improvements in web roll controlling mechanism in which friction devices are employed engaging with the surface of the roll for controlling the rotat-ion thereof.

In this class of mechanism, friction devices usually in the form of belts are used which engage the roll surface and act to control the rotation of the roll. As these belts have heretofore been used they have been relatively wide, that is, they engaged a considerable part of the roll surface. These belts have, furthermore, been located so that they engaged the roll surface at points on 1 which the Web was afterwards printed.

rolls in which relatively narrow devices are employed which engage with the roll surface, these being located so as to engage the roll at points which form the margin spaces of the web after printing, so as to eliminate largely the formation of lint, what lint is formed being in places where it produces no serious inconvenience.

It is a further object of the invention to provide an improved means for producing additional tension on the friction devices, to stop the rotation of the roll in the event of sudden stoppage of the press or for other reasons.

With these and other objects not specifically referred to, the invention consists in Figure 2 is a similar view showing the. parts in a different position;

. Figure 3 is a side view of part of the construction shown in Fig. 2, the view being taken in the direction of the arrow of that figure, and

Figure L is a detail, .partly broken plan view taken on the line BB of Fig. 2.

Referring now to these drawings, the mechanism which has been selected to illustrate the invention is a roll changer capacitated to carry a running web roll and a spare web roll,'the support for the rolls being capable of being rotated or rocked from loading to running position, but it will be understood that the invention as to certain of its features may be used in other relations and with other forms of web roll supports.

In the particular mechanism shown, however, there is provided a roll support capacitated to carry a running roll and a spare roll. This support includes a pair of spaced side arms 1,. 2, each arm having bearings 3, 4, preferably arranged diametrically opposite each other forsupporting the journals of two web rolls marked R and B, one of which, as R, is the running roll and the other of which, as S, is the spare roll. These roll supporting arms are mounted so that they may have a rotary or rocking movement, each arm being provided with a hub 5 mounted ona shaft 6 supported in-a bearing 7 carried on standards 8 suitably supported on a base or foundation 9, suitable mechanism, not shown, being provided for driving this shaft.

The web W from the running roll R goes to the press, not shown, over a guide roll 10 suitably su ported in side frame's 11, 12 supported em the floor of the press room or other suitable base. In accordance with the invention, this running web is controlled by suitable friction devices which are arranged to engage the surface of the roll at points which become margin spaces between the printed pa s of the web after it is printed, these riction controlling devices eing comparatively narrow, that is, about the width of such mar spaces, so that the surface of the roll which is to be printed is not rubbed by the friction devices'and the formation of lint at these parts of, the roll is avoided,

While these friction controlling devices may assume various forms, as shown, they are in the form of narrow belts of any suitable material, such as canvas or leather,

three such'belts 13, 14 and 15 being shown. These belts are arranged side by side and engage the roll surface at points which become margin spaces after the web is printed. As shown, the belt 14 is arranged to engage the web roll at the center and the I belts 13 and 15 on each side thereof, being spaced from the center belt approximately the width of one page. While this arrangement is a preferred one, it will be understood that other belts engaging other margin spaces may be employed if desired, the particular arrangement shown being one for printing a four page wide product. 1,

While these belts may be mounted and supported in various ways, in the preferred construction they are arranged so that as the running roll decreases in size'the tension on the rolls exerted by the pressure of the belts is regulated and, in the best constructions, furthermore. means will be provided whereby the tension of the belts against the roll surface may be increased or decreased as may be desirable. In the particular construction shown the belts are free at one end, being carried over a roll or rod 16 suitably mountedin side frames 17, 18, the belts passing freely over this roll and having secured thereto weights 19 so that as the roll decreases in size the weights will a drop and take up the slack of the belts, thus I of the invention, means will be. provided by which he tension of the belts may be autokeeping the belts under the desired tension.

The belts at their other ends are secured around a shaft or rod -20 mounted in lever arms 21, 22 pivoted on a shaft 23 secured in brackets 24, 25 carried by the side frames 17 18.- before referred to. The other arms 26, 27 of the levers are connected to a compression spring 28 carried around the spring rod 29 suitablysupported on the base 9, before referred to. It will be seen that by rocking the frames to the position shown in Fig. 2the spring is compressed and the tension of the belts against the surface of the roll increased.

In machines embodying the preferred form matically increased in case of the sudden stoppage of the press due to .a break'in, the web or any other reason, so that the belts will act to brake the roll and prevent overrun of the'web. In the best practice these means will be independent of the lever and spring construction by which. as above'described, the tension of the belts may be varied, as with such independent control the rolls may be quickly stopped without the necessity of manipulating the tensioning mechanism. While this may be eflected .in various ways. in the particular construction illustrated the belts pass over drums 30 mountedon a cross shaft 31 suitably supported in side frames 17 18, before referred to, the belts being guided around the drums by suitable guide rolls 40, 41, so arranged as to cause the belts to encircle the major portion of the peripheries of the drums. This shaft at one end is provided with a gear 32 which meshes with a gear 33 on the armature shaft 34 of a small motor 35 supported on a bracket 36 on one of the side frames, asthe frame 18.

As will be understood by those skilled in the art, the press is driven from a suitable motor and is provided with an emergency switch by which the press can be stopped and with devices for stopping the press in the event of a break in the web. The motor 35 is in circuit with the main circuit of the press, a circuit being diagrammatically indicated by the lines a, b, and this motor 35 is energized when the press is stopped through a solenoid or other suitable device,

' the circuits for which are not shown as they While the invention has been shown and,

described in its preferred form, it will be understood that various changes may be made in the structure shown and described and the invention is not to be limited to the structure and arrangement of the parts shown.

What I claim is:

1. In a web roll control mechanism for printing machines, the combination of a web roll support and a web roll controlling device comprising a, plurality of narrow friction devices enga g the 'roll surface, said friction devices ,ing located to bear against the surface of the roll or those parts which form margin spaces between the printed pages of the web.

2. In. a web roll control mechanism for printing machines, the combination of a web roll support and a web roll controlling device comprising a plurality of narrow friction belts engaging the roll surface at points which form margin spaces between the printed pages of the web.

3. In a web roll control mechanism for printing machines, the combination of a web roll supporting frame and a web roll supported t ereby, of narrow friction belts arranged t6 engage the roll surface at tween the printed portions- 0 the web, and weights attached to the belts and holding them in contact with the roll surface.

4. In a web roll control mechanism for printing machines, the combination of a points which form the; mar 'n spaces beweb roll supportand a web roll supported thereby, a web roljl controlling device comprising a plurality of narrow friction devices engaging the 'roll surface at points which form the margin spaces between the printed pages of the'web, tension devices connected to the friction devices for varying the pressure of the devices on the roll surface, and means independent of the tension devices for causing an increased pressure of the friction devices on the roll surface.

5. In a web roll control mechanism for printin machines, the combination of a web -rol support and a web roll: supported thereby, a plurality of narrow friction de vices engaging the roll surface at points which form the margin-spaces between the printed pages of the web, tension devices connected to the friction devices for varying the pressure ofthe devices on the roll surface, and automatically operating means independent of the tension devices for caus- -ing an increased pressure of the friction devices on the roll surface. p 6. In a web roll control mechanism for printin machines, the combination of a web ro support, a web roll controlling device comprising a plurality of'nari'ow friction belts en aging the roll surface at points which orm margin s aces between the printed pa es of 'the we and means for automatical y increasing the pressure of the belts on the roll surfacein the event of stoppage of the press.

7. In a web rolL control mechanism for printing machines, the combination of a rotary web r011 support, a number of narrow fricton belts engaging the roll surface at points which form margins aces between the printed pages of the we tension devices connected with Xthe belts and arranged to be put under tension by *rotating the support, and means "independent of the of the belts on the roll'surface. v

8. In a web roll control mechanism for printing mechines, the combination of a web roll support; a friction belt engaging tension devices for increasing the pressure the surface of a roll carried in thesupport,

said belt being secured at one end and free at-the other, a friction drum over which the belt passes, and means for rotating the drum to cause an increased belt on the roll surface.

' 9. In a web roll control mechanismfor pressure of the printing machines, the combi ation of a web roll support, narrow friction belts engaging the surface of a roll carried in the support, said belts being secured at one end and free at the other, weights attached to the free ends of the belts, drums over which the belts pass, and means for rotating the pressure of the face of the running roll at points which form ,margin spaces between the printed pages of the web.

In testimony whereof, I have hereunto set my hand. I

WALTER H. OGrDElg. 

